EP 3515510 A2 20190731 - POLYURETHANE-HYDROGEL COMPOSITION COMPRISING CHLORHEXIDINE
Title (en)
POLYURETHANE-HYDROGEL COMPOSITION COMPRISING CHLORHEXIDINE
Title (de)
POLYURETHAN-HYDROGEL-ZUSAMMENSETZUNG MIT CHLORHEXIDIN
Title (fr)
COMPOSITION DE POLYURÉTHANE-HYDROGEL COMPRENANT DE LA CHLORHEXIDINE
Publication
Application
Priority
- IT 201600096247 A 20160926
- EP 2017074371 W 20170926
Abstract (en)
[origin: WO2018055200A2] The invention is directed to a composition comprising: a polyurethane substrate; a hydrogel forming polymer on at least one of the two faces of the polyurethane substrate; and chlorhexidine on the at least one face comprising the hydrogel forming polymer; wherein the hydrogel polymer is covalently linked to the polyurethane substrate. The invention is also directed to a dressing comprising the composition and to a process for the preparation of the composition, the process comprising the following steps: a) impregnating at least one face of a polyurethane substrate with a solution comprising a reactive diolefin and a free radical initiator; b) extracting the polyurethane from the solution and, after drying, immerging the polyurethane in a solution containing the initiator catalyst and the hydrogel forming polymer to obtain PU covalently bond to a hydrogel forming polymer; c) extracting the polyurethane-hydrogel composition and drying in air; d) immerging the product of step iii) into an aqueous solution of chlorhexidine; e) collecting the polyurethane-hydrogel-chlorhexidine product from the solution and drying the obtained composition in air.
IPC 8 full level
A61L 15/26 (2006.01); C08J 7/056 (2020.01)
CPC (source: EP US)
A61L 15/225 (2013.01 - US); A61L 15/26 (2013.01 - EP US); A61L 15/42 (2013.01 - US); A61L 15/44 (2013.01 - US); C08J 7/0427 (2020.01 - EP US); C08J 7/056 (2020.01 - EP US); A61L 2300/104 (2013.01 - EP US); A61L 2300/206 (2013.01 - EP US); A61L 2300/404 (2013.01 - EP US); A61L 2400/12 (2013.01 - US); C08J 2375/04 (2013.01 - US); C08J 2439/06 (2013.01 - US)
C-Set (source: EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2018055200 A2 20180329; WO 2018055200 A3 20180503; CN 109982726 A 20190705; EP 3515510 A2 20190731; IT 201600096247 A1 20180326; US 2019336640 A1 20191107
DOCDB simple family (application)
EP 2017074371 W 20170926; CN 201780070683 A 20170926; EP 17777239 A 20170926; IT 201600096247 A 20160926; US 201716344708 A 20170926